Home / 104,386.40-156,628.20-54,522.80

Finding the Fourth Proportional to 104,386.40, 156,628.20 and 54,522.80

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Solution

The fourth proportional to 104,386.40, 156,628.20 and 54,522.80 is: 81,809.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,386.40 : 156,628.20 = 54,522.80 : x
  2. Step 2: Convert to fraction form
    104,386.40/156,628.20 = 54,522.80/x
  3. Step 3: Cross multiply
    104,386.40x = 156,628.20 × 54,522.80
  4. Step 4: Simplify right side
    104,386.40x = 8,539,808,022.96
  5. Step 5: Solve for x
    x = 8,539,808,022.96/104,386.40
  6. Step 6: Final answer
    x = 81,809.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.